Reaction catalyzed by glutathionyl-hydroquinone reductase (1.8.5.7)

		+			=		glutathionyl cysteinyl disulfide	+
	L-cysteine	+		2-(glutathione-S-yl)-trichloro-p-hydroquinone	=		glutathionyl cysteinyl disulfide	+		trichloro-p-hydroquinone